Quantitative Aptitude - Arithmetic Ability Questions

What is the value of (cos 45 - 1/3) ?

If x = 4aba+b, then what is the value of x+2ax-2a+x+2bx-2b ?

The average of 100 observations was calculated as 35.It was found later, that one of the observation was misread as 83 instead of 53. The correct average is :

Find the volume (in cm3) of a right circular cylinder of diameter 21 cm and height 10 cm.

The radius of two circles is 3 cm and 4 cm. The distance between the centres of the circles is 10 cm. What is the ratio of the length of direct common tangent to the length of the transverse common tangent?

Select the odd letters from the given alternatives.

The sum of the lengths of the edges of a cube is equal to the perimeter of a square. If the numerical value of the volume of the cube is equal to the numerical value of the area of the square, then the length of one side of the square is

The ratio of the volume of two cylinders is 7 : 3 and the ratio of their heights is 7 : 9. If the area of the base of the second cylinder is 154 sq. cm, then what will be the radius (in cm) of the first cylinder?